diff --git a/Cargo.toml b/Cargo.toml
index f9e37a3..fb9d7dd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lasprs"
-version = "0.4.0"
+version = "0.4.1"
 edition = "2021"
 authors = ["J.A. de Jong <j.a.dejong@ascee.nl>"]
 description = "Library for Acoustic Signal Processing (Rust edition, with optional Python bindings via pyo3)"
diff --git a/src/lib.rs b/src/lib.rs
index 7c5f41f..99ad4d1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -17,7 +17,6 @@ pub mod filter;
 pub mod daq;
 pub mod ps;
 pub mod siggen;
-mod math;
 use filter::*;
 
 /// A Python module implemented in Rust.